Test failure triage

Workflow

1. Baseline run

Run the project's standard test command and capture full output (counts, error types, files).

2. Group failures

Group by:

• Error type: ImportError, AttributeError, AssertionError, etc.
• Root file/module: Same file causing multiple failures.
• Likely cause: Recent change area (use git diff, recent commits).

Prioritize groups with highest downstream impact (imports/config before assertion tweaks).

3. Fix order